The prototype's scripts have not started.

This page needs JavaScript from the assets/ folder next to it. If you are seeing this message:

• Open index.html directly in Chrome, Edge or Firefox — double-click it in File Explorer, or drag it onto the browser window. A code editor's built-in preview pane usually blocks scripts.
• Keep index.html and the assets/ folder together; moving one without the other breaks it.
• If you need a single file to e-mail or open anywhere, use TMTM-prototype.html in this folder — everything is bundled inside it.